LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Oil leak.. need ideas

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Old 06-15-2009, 05:32 PM
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Default Oil leak.. need ideas

Car is leaking some oil when driving for a while. A nice sized puddle forms underneath the car when I park. When I first start it up, the driver side header burns oil (obviously oil is leaking from somewhere). I checked out the oil pan gasket, oil filter and rear main. Everything checks out okay. Last thing I can think of is the oil pressure sensor on the driver side of the block (93' location). That would make perfect sense as to why only the driver side header is burning oil. Any ideas? Oil pan is dry, but wherever it's leaking from, the oil obviously travels further back as I'm driving (covering everything in oil). Oil pressure sensor doesn't feel like there's any cracks in it (but then again I can't tell without taking it out and looking at it - and those of you who have it on the driver side block know how much of a pain it is to get to it without the right tool, which I don't have lol) Halp!
Old 06-15-2009, 05:33 PM
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valve cover gasket? intake manifold?
Old 06-15-2009, 07:59 PM
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^^ X2 this was my first thought as well. I had this same problem. Once was the pass. side valve cover. The other time was the back of the intake manifold.
Old 06-15-2009, 08:19 PM
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check ur Oil Filter
or the oil Bolt under the engine
Old 06-15-2009, 08:48 PM
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All of those suggestions checked out fine. Everything dry. It's only when the car is running.
Old 06-15-2009, 08:49 PM
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I would suspect either the intake manifold gasket or a valve cover gasket.
Old 06-15-2009, 08:56 PM
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Originally Posted by RamAir95TA
I would suspect either the intake manifold gasket or a valve cover gasket.
+1 with ram. had old motor pulled and back of intake was layered with caked oil.
Old 06-15-2009, 08:58 PM
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Originally Posted by RamAir95TA
I would suspect either the intake manifold gasket or a valve cover gasket.
That's what I suspected at first as well.. Then to find out that they are both dry and clean, I was really befuddled I'm hoping it's the oil pressure sensor. I'll check that out sometime this week. Car's running great though and TH350 swap was a success. I just want to get rid of this leak before I take it to the track
Old 06-15-2009, 11:42 PM
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check your bumper bearings. If its not that then check the oil presure sensor like i told u fgt.a crescent wrench takes it out easy.
Old 06-15-2009, 11:56 PM
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Originally Posted by 93cz28
check your bumper bearings. If its not that then check the oil presure sensor like i told u fgt.a crescent wrench takes it out easy.
Adjustable's make me aggressive.
Old 06-16-2009, 04:45 AM
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intake is totally gay
Old 06-17-2009, 09:18 PM
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pulled the oil pressure switch off.. and the o-ring (that's between the plastic part and aluminum part of the switch) was torn and sticking out. Could this have caused my oil leak? I mean, it is a pressurized source, right?



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